Metal In Contact With Ions

.......... is metal ion present at the centre of chlorophyll.

Which of the following metal ions cannot act as an electrophile?

Statement-I: In the Daniel cell, if concentration of Cu^(2+) and Zn^(2+) ions are doubled the emf of the cell will not change. Because Statement-II: If the concentration of ions in contact with the metals is doubled, the electrode potential is doubled.

Assertion (A) : In a Daniell cell, if the concentration of Cu^(2+) and Zn^(2+) ions are doubled, the EMF of the cell will be doubled. Reason (R) : If the concentration of ions in contact with metals is doubled, the electrode potential is doubled.

MgO exists in a rock- salt type unit cell .Each Mg^(+2) ion will be is contact with be in contact with

Ethylenediaminetraac etate ion froms an octo hedral complex with be metal ion Reason It has six donor atoms which coordinate simultaneously to the metal ion .